Eugene debval



(No Model.)

- E. DERVAL.

GAS PRESSURE REGULATOR.

Patented Sept, l, 1885.

[4 /722 came;

7 UNITED STATES PATENT OFFICEQY EUGENE DERVAL, or PARIS, FRANCE.

GAS-PRESSURE REGULATOR.

QPECIFICATION forming part of Letters Patent No. 325,509, dated September 1, 1885.

Application filed July 1, 1885. (No modelll Patented in France February 20, 1885, No. 164,949.

To all whom it may concern.-

Be it known that I, EUGENE DERVAL, a

citizen of France, residing at Paris, in the Department of the Seine, France, have invented new and useful Improvements in Gas- Pressure Regulators, (for which I have ob tained a patent in France hearing date February 20, 1885, No. 164,949,) of which the following is a specification.

This invention, although not wholly limited thereto, relates more particularly to that class of regulators for controlling the pressure of illuminating-gas in which a float is used to vary the positionof the regulatorvalve. In these regulators an increase of pressure on the consumption side of the valve lowers the level of the liquid in which the float is placed and allows it to descend, and by partially closing the valve checks the flow into the pressu're-chamber'until equilibrium is established. 011 a diminution of the pressure, the level of the liquid rises, the float is raised, and the valve opened to such an extent as to restore the equilibrium. In the other ordinary forms of regulator, which commonly have a diaphragm or a bell for the body, movable under variations of pressure, instead of a liquid, the general operation is the same. The regulation is, however, imperfect where there is considerable variation in the gas consumption, becausewhere a larger quantity of gas is to be forced through the pipes it is necessary, in order to have a uniform supply at the burners or points of consumption', that the pressure at the regulator should be increased, whereas with the ordinary regulators the pressure is kept constant under all conditions of use, or if any change occurs in pressure it is diminished with an increase in consumption Toeffect automatically a variation in the pressure proportionate to the rate of consumption,while maintaining what may be called a constant normal or average pressure, is the principal object of the invention. To this end the gas, after passing the regulator-valve, enters a collectingch amber, and escapes thence into the distributing-pipes or a chamber connected therewith through an opening or open ings of such size as to check the flow somewhat. Thus there is a difference of pressure inside and outside of said chamber, which difference is proportional to the flow, and is utilized to open the regulator-valve to a corresponding extent by connecting said valve with a movable body (such as a diaphragm or partition) arranged to be acted upon in opposite directions by the pressure of the gas inside and outside of said chamber. The valve is also connected with a movable body,which,

as in ordinary regulators, is acted upon by Y the gas-pressure either inside or outside of said chamber, or both, in such manner that the valve is closed more or less as the press; 'ure increases. Thus the valve comes into equilibrium under the action of two forcesnamely, the pressure at the regulator on the consumption side of the valve, tending to close the valve as it increases, and the difference in pressure inside and outside of the collecting-chamber. due to the flow or rate of consumption, tending to open the valve as it becomes greater. In order to regulate this difference of pressure means are provided for varying the size of the escape-openings of the collecting-chamber, so that the flow of gas may had to the accompanying drawings, in which Figure 1 is a sectional elevation of a gas-regulator constructed in accordance with the 'in-g ventiou; Fig. 2, a similar partial view, the section being in another plane; and Figs. 3 and 4, detail views.

The body or casingT of the regulator is divided into two parts by the cylindrical partition I, which is hermetically joined to the L cover G and'extends nearly to the bottom. In the inner compartment is the annular float F, which is connected with the regulator-valve S-S, so that the rise of the float opens and the fall of the same closes the valve. The float F is supported by the liquid,with which the regulator is filled to the proper depth. The liquid is introduced by the funnel Q and pipe M, and can be withdrawn more or less by removing the screws 11 b. A plunger, P,

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partly immersed in the liquid, is engaged by the screwJ), whichis provided-w-ithaJnillefl head or. hand-wheel, X, forturning, so-that said plunger can be raisedor depressed in order to submerge it more or less, and therebyraise or lower the level of the liquid. By these changes of level the-valve S iS is adjusted to maintain the desired pressure in the pipes.

The exterior compartment isor maybe open to the air through the tube U.

The valve S S is hollow, and is made in two parts, screwed together, so thatgthey can.

be readily separatedQ The seats for t-he t ro.

parts are formed in the disks c c. A space above the disk c is closed by the cap N, the

interior of which is in free,i'conrmu nieatiqnf with the inlet-pipe 13 through the hollow-o t the valve. The pressure" in; the clapll N? evi dentl'y tends to clese the valve, Whilethatin the inlet-pipe B tends to open it}. As thepressure p'e'r" square inch; in-the cap N willg usually be lessthan thatin pipe B ,-theupper part, S,.; of the valve 'is "made 'a littl elarger, than the lower, so thatthe valve will-be practically balanced. In the drawing the upper partA-is so much larger that the lower part, S,

will slip through the upper valve-seat, c. The cap N is screwed to the pipe" M, whit h-is screwed-or otherwise fastened to the: coupling A, and is provided withopenings for. thefr'e'e" passage of the gas after ithas passedthro'ug'h the valve S S, The ring, Z,, forming part oi'l the bottom of the regulator-casing T, isscrewed on the coupling A Thetubeh; solderedatg the lowerend 'to the ring Z,- surrounds the pipe M andcap Nand excludes the liquid} irom the valve. The latteris suspended from,

the float F by means of the plate R, the scre'wf a, the fine platinum wire-f,-(whi ch passes through a-sm'all hole in the cap' NJand the cross-bar n. The screw'a isitapped into the platevR. The valve can be removed {after unscrewing the screw a byn oving the wire f through the'slit t, (see Fig. 4,) so a'l's jto bring the. screw opposite one of theflarge holes in plate R, which is of sufficientsi ze' for the screwto passthrongh'it.

It will be observed that the center of grayity of the fioatand its suspendedpartsis very, -low, which is not the case with hydrostatic;

regulators heretofore made.

The plate R, in; connection with the inner wall, g, of thefioat, forms a col lecting ch am-- her which is in communication with-the compartment formedby partition Iandthedis: tributing or outlet pipe Cthrough;v the holes; in the plate R; In order to regulate the size of these holes a similar adjustable plate, R, is; placed on the plate R, and ;is retained in po; sition by the screw 11.

R the size of the openings can he-regulated; Practically it forms a valve for controlling the, flow from the collecting charnber. l Assuming that the gas is being consumed and the valve S S open to the proper extent, to give the desired' pressure insidethe parti- By turning the plate. 5

tion I, the operation is as follows: Ifthe presslure rise i the inlet-pipe .B,; a.,n 1omentary increase-of-pressure will-take place inside the regulator, the liquid-level inside the partition I will be depressed, the float F will fall, and the valve S S close sufficiently to compensate .for. the in c reaseofi-pressure. On the other hand,'if the pressurein the inlet-pipe B din1inish,the reverse action takes place, the float risesand lifts the. valve, so as to allow the gas to enter more freely. If more burners be lighted, a'momentary fall in pressure takes iiplaee within the-regulator, the liquid flows f om the hut-e 21 qt i ner. omp the float rises, the valve S S is opened, and an increased whf ehstakesrl e. h slin creased flo w tendsstillfurther to lift the lvef hrfi le ts in h h hm l'. ormed. yt hir h ehi. n wah aster. han. n anif h ehr he. opening n h -plates. R 1,.

hat th a pe tai extent. Qu hfthe l quid, .and pe ing. hev Yhl e. 8 st, to a hh esnoin e.

{ing extent. "lilquilibrium isest ablishedwhen he; a i n. f he h lect hs: hhihheri pen-l l i l he; hrces 'x rough he. p res it nut hrhaseihn shre i l, mo eov r, hPlIP-PPI: tionate to theiiow The amoun,t of.-the in; hhsef ah hh lates by dj st t ev lvh p ht It" O e he hknfieflewjrom. he; 0.01; t es amb r. more or. s ,v as qu e valve.

llx ur'i yh hsw h nes h i ght em, {Th h i h e e a jus m nt ne rhQ-th plates h t rprh i d i e alu t on .ohmahks shhwh he i When. burners are turned off and "the-eon fhl Lhsh r S pr ssu e. upward, f ih hhh ing the yalve, and thusga larger quantity of lmhrh he owis hhhhkedi he g ateh i l; e-th d f hre h in Pre u e b tween, the in: de' hd -i t ia e f. a d. ambe mad the greater the. lifting force tending.- to. Dpen the Oiwill higher than it would be exception- IOO ld ihri s he pr ssure h IllQ S. e

IIO

I i l i. t earse. e u d rs od. h t; he; ph ih hhhldhht emhde o ma lthatm ummon f, h h sh d, hhpressur n.

the resh hh hr shs, lev lhf the i uid h h hhhr rtih hh I is QP B SQQ, he hat:

gdescends, and the valve is partly closed. At

the same time, the flow, beingles s, thefldliflferhe in Pressure. twe the. i id rdent: s e o t e. hl t hamb s slhhd.

e qhh ihk e p i e qhidandi loses the valve S S to a corresponding degree,

S meti es it may v e ri fle; ow se he.

ull he dfl P ssure i h ihleh-pipeR.

ihh h t re U s p ged. and thescrew.

b israised, so asto put the compartments in mmu t on t r h t e hole d p r: tition I. The level ,of. the liquid will, then 'be the same in both compartments.

works or wherever else its use may be (16',

sired.

Forms, proportions, dimensions, materials, and other details can be varied without departing from the spirit of the invention, and parts of the invention may be used separately.

I claim- 1. A fluid-pressure regulator comprising, in combination wit-h the regulator-valve and a movable device connected with said valve for opening it when the pressure in the regulator diminishes and closing it when it increases, a collectingchamber providedwith openings for the escape of the fluid into the outlet or distributing pipe, and a movable body acted upon in opposite directions by the pressure inside and outside said collecting'chamber and connected with said valve, so that an excess of pressure inside tends to open the valve, substantially as described.

2. The combination, with the, regulatorvalve, the collecting-chamber provided with escape-openings,and the movable body acted upon in opposite directions by the pressure of the fluid before and after it haspassed through said openings, of the adjustable plate or valve for adjusting the size of said openings, substantially as described.

3. The combination of the float, the regulator-valve, and the collecting-chamber forming part of said float and providedwith escapeopenings, said parts being arranged as explained, so that the valve opens on the rise and closes on the fall of the float, substantially as described.

for regulating the size of said openings, substantially as described. 7

5. The combination, with the float or movable device in a pressure-regulator, of the twopart hollow balanced valve and the double valve-seat, substantially as described.

6. The combination, with the body or casing divided into two compartments communicating at the bottom, of the float in one of said compartments and the regulator-valve suspended fromsaid float, said valve being arranged to close the inlet-opening on the .fall and open it on the rise of said float, substantially as described.

7. The combination, with the body or casing, the partition depending from the top and di viding it into two compartments communicating at the bottom, the float in one compartment, and the regulator-valve connected with said float, of the movable. plug closing an opening at the top of the partition, for enabling the two compartments to be put in communication at the top also, substantially as described.

8. The combination of the annular float, the perforated plates forming a collectingchamber in the middle of said float and one of them being adjustable, and the regulator-valve connected with said float, substantially as described.

9. The combination, with the two-part hollow valve, of the double seat and the cap forming a closed chamberabove the upper seat, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

EUGENE DERVAL.

Witnesses J. A. AYOLLEY, ARTHUR Goon. 

